MEKACI:
I connected, CE to pin 9, CSN to pin 53 ( CSN's other name is SS - slave select ), SCK to pin 52, MOSI to pin 51, MISI to pin 50 at my arduino mega. I was shared what pins I connected with a screenshots ).
That seems correct.
Have you tried the examples in my tutorial?
Your photo (in Reply #2) seems to show a lot of stuff connected to the Mega as well as the nRF24.
Have you tried using the Mega on its own with the nRF24 as the only thing attached?
How are you powering the nRF24s?
...R